Patent US5396152A successfully refreshed from Google Patents.
US5396152A
Expired / Lapsed
US
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Electrical circuit for the pulsed operation of high-pressure gas-discharge lamps
Assignee: Osram GmbH
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Filing: 1991-12-04
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Granted: 1995-03-07
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Expires: 2011-12-04
Abstract
Abstract The Lamp (La) is connected in series with first reactive impedances (C1, . To generate pulses, one or more second reactive impedances (C3, L3; C3-L2) are located as energy storage elements in series with one or more switch elements (S3, VTh1, VD1) to at least one of the first reactive impedances (C1, L1) and also in series with the high-pressure gas discharge lamp.
Inventors
- 👤 Michael Bonigk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:27
CPC Classifications
H; H05; H05B; H05B41/00; H05B41/14; H05B41/30; H05B41/26; H05B41/28; H05B41/288; H05B41/2885; H05B41/36; H05B41/38; H05B41/39; H05B41/392; H05B41/3921; H05B41/3927; H05B41/3928; Y; Y02; Y02B; Y02B20/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
118 words
An electrical circuit for pulsed operation of a high-pressure gas discharge lamp, in which the lamp (La) is in series with first reactive impedances, comprising a capacitor (C2) connected in parallel to the high-pressure gas discharge lamp, and a half-bridge circuit (S1, S2; VT1, VT2) connected to supply electrical energy to the lamp, wherein to generate pulses for pulsed operation, one or more second reactive impedances (C3, L2, L3) are located as energy storing means in series with one or more switch elements (S3), said switch elements and second reactive impedances being connected in parallel to at least one of the first reactive impedances (C1, L1) and, further, connected in series with the high-pressure gas discharge lamp (La).
Claim 2
Dependent Claim
118 words
An electrical circuit for pulsed operation of a high-pressure gas discharge lamp, in which the lamp (La) is in series with first reactive impedances, comprising a capacitor (C2) connected in parallel to the high-pressure gas discharge lamp, and a half-bridge circuit (S1, S2; VT1, VT2) connected to supply electrical energy to the lamp, wherein to generate pulses for pulsed operation, one or more second reactive impedances (C3, L2, L3) are located as energy storing means in series with one or more switch elements (S3), said switch elements and second reactive impedances being connected in parallel to at least one of the first reactive impedances (C1, L1) and, further, connected in series with the high-pressure gas discharge lamp (La).
Claim 3
Dependent Claim
93 words
The circuit of claim 1, wherein the series circuit comprising one or more second reactive impedances (C3, L2, L3) and one or more switch elements (S3) comprises either a capacitor (C3) in series with an electromechanical or electronic switch (S3; VTh1, VD1), or an inductance (L3) in series with an electromechanical or electronic switch, or a capacitor (C3) and an inductance (L2), forming a series oscillating circuit, connected in series with an electromechanical or electronic switch, wherein the respective electromechanical or electronic switch forms said one or more switch element (S3, VTh1, VD1).
References Cited (Backward Citations)
US2462371A
Cited
DE2657824A1
Cited
DE2729052A1
Cited
DE2825532A1
Cited
US4442380A
Cited
DE3122183A1
Cited
US4525651A
Cited
US4477796A
Cited
DE3540985A1
Cited
DE3636901A1
Cited
DE3641070A1
Cited
EP0334356A1
Cited
US5289083A
Cited
EP0447010A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-03-06 | 1998-09-05 | 1999-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-06 | 2002-09-05 | 2003-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-06 | 2006-09-05 | 2007-03-07 | $7700.00 | Window Closed / Lapsed |